Mazda 6 Workshop Manual page 173

Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has FREEZE FRAME DATA been recorded?
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Verify related service repair information
availability.
• Is any related repair information available?
3 VERIFY CURRENT SIGNAL STATUS: IS
CONCERN INTERMITTENT OR CONSTANT?
• Connect the WDS or equivalent to the DLC-2.
• Clear the DTC from the PCM memory using
the WDS or equivalent.
• Start the engine.
• Is the same DTC present?
4 INSPECT INTAKE SHUTTER SOLENOID VALVE
(FULL) CONNECTOR FOR POOR
CONNECTION
• Turn the engine switch off.
• Inspect for poor connection (such as damaged/
pulled-out terminals, corrosion).
• Is there any malfunction?
5 INSPECT INTAKE SHUTTER SOLENOID VALVE
(FULL) CIRCUIT FOR SHORT TO POWER
• Turn the engine switch off.
• Inspect the voltage between intake shutter
solenoid valve (full) terminal B and body GND.
• Is the voltage B+?
6 INSPECT INTAKE SHUTTER SOLENOID VALVE
(FULL)
• Inspect the intake shutter solenoid valve (full).
•
Is there any malfunction?
7 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn the engine switch off.
• Inspect for poor connection (such as damaged/
pulled-out terminals, corrosion).
• Is there any malfunction?
8 VERIFY TROUBLESHOOTING OF DTC P0665
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the PCM memory using
the WDS or equivalent.
• Start the engine.
• Is the PENDING CODE for this DTC present?
9 VERIFY AFTER REPAIR PROCEDURE
• Perform the Repair Verification Drive Mode.
(See F2–39 OBD DRIVE
• Are any DTCs present?
End Of Sie
ON-BOARD DIAGNOSTIC
INSPECTION
MODE.)
Yes Go to the next step.
No Record the FREEZE FRAME DATA on the repair order,
then go to the next step.
Yes Perform repair or diagnosis according to the available
repair information.
• If the vehicle is not repaired, go to the next step.
No Go to the next step.
Yes Go to the next step.
No Intermittent concern exists.
Perform the "INTERMITTENT CONCERNS
TROUBLESHOOTING".
Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
Yes Repair or replace wiring harness for a short to power
supply, then go to Step 8.
No Go to the next step.
Yes Replace the intake shutter solenoid valve, then go to Step
8.
No Go to the next step.
Yes Repair or replace the terminal, then go to the next step.
No Go to the next step.
Yes Replace the PCM, then go to the next step.
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See F2–40 DTC TABLE.)
No Troubleshooting completed.
ACTION
F2–161
F2